<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>浮动</title>
		<style> 
			#main {
				border: 5px solid red;
				display: flex;
				/* flex-wrap: wrap-reverse; */
				flex-flow: row-reverse wrap;
				/* justify-content: center; */
				/* justify-content: space-between; */
				justify-content: space-around;/*空白间距相同*/
			}
			#main div:nth-child(1) { 
				order:200;
			}
			#main div:nth-child(4) {
				height: 210px;
				order:-100;
			}
			

			#main div {
				flex-shrink: 0;
				height: 100px;
				width: 100px;
				margin: 2px;
				background-color: aqua;
				font-size: 30px;
				text-align: center;
				line-height: 100px;
				font-family: 'Times New Roman', Times, serif;
			}
 

			#p1 {
				border: 2px groove greenyellow;
			}
		</style>
	</head>
	<body>
		<h3 id="hh">你好，我是渣渣灰</h3>
		<div id="main" >
			<div>11</div>
			<div>22</div>
			<div>33</div>
			<div>44</div>
			<div>55</div>
			<div>66</div>
			<div>77</div>
			<div>88</div>
			<div>99</div>
			<div>10</div>
			<div>22</div>
			<div>12</div>
			<div>13</div>
			<div>14</div>
			<div>16</div>
			<div>15</div>
			<div>17</div>
			<div>18</div>
			<div>19</div>
		</div>
		<p id="p1">
			We change lives
		</p>
	</body>
</html>
